Backpack



FIG. 1 is a perspective view of a backpack having my design;

FIG. 2 is a front view of the backpack of FIG. 1 ;

FIG. 3 is a rear view of the backpack of FIG. 1 ;

FIG. 4 is a left side view of the backpack of FIG. 1 ;

FIG. 5 is a right side view of the backpack of FIG. 1 ;

FIG. 6 is a top view of the backpack of FIG. 1 ;

FIG. 7 is a bottom view of the backpack of FIG. 1 ;

FIG. 8 is a front view of the backpack of FIG. 1 , shown with environmental subject matter; and,

FIG. 9 is a front view of the backpack of FIG. 1 , shown with alternative environmental subject matter.

The broken lines in FIGS. 8 and 9 showing animate features and/or leaves/foliage/flowers depict environmental subject matter that forms no part of the claimed design. The remaining broken lines depict portions of the backpack that form no part of the claimed design. 

CLAIM The ornamental design for a backpack, as shown and described. 